Abstract: Ceiling fan energy consumption efficiency is enhanced with fan blades that have an angle attack that decreases from root end to tip end at higher rates of decrease nearer their tip ends than at their root ends.

Abstract: An inside-out ceiling fan motor has a stator mounted to a downrod with an annular array of stator coils positioned about a rotor axis of rotation. A rotor is rotatably mounted about the stator. The rotor has a plurality of vanes spaced along the rotor periphery and canted at an angle of attack to a plane of rotor vanes rotation oriented normally to the rotor axis of rotation to scoop ambient air into the rotor during fan operation through the stator coils to cool them.

Abstract: A ceiling fan (10) is disclosed having a motor housing (11) with an electric motor to which is mounted an annular array of blade irons (14) each having a blade (15) mounted thereto. Each blade has two, catch mounting holes (17) and a fastener mounting hole (18) extending therethrough. Each blade iron (14) has a blade mounting portion (23) and a removable blade fastener (24). The blade mounting portion (23) has a top surface (26), two stationary mounting catches (27), and a fastener receiver (28) that is configured to receive fastener (24). Each catch has a generally vertical portion (31) and a top, horizontal portion (32) The horizontal portion (32) is spaced a select distance from the top surface (26) through the height of the vertical portion (31) so as to catch snugly the blade (15) therebetween. The fastener (24) extends through the fastener mounting hole 18 and into the fastener receiver (28).

Abstract: A ceiling fan (10) is disclosed having a motor housing (11) with an electric motor (13) to which is mounted an annular array of blade irons (14) each having a blade (15) and a locking plate (17) mounted thereto. Each blade iron has three locking pins (26). Each locking pin has a shaft (27) extending to a head (28). Each blade 15 has three key-hole shaped locking pin mounting holes (31) extending therethrough, a top surface (32) and a pair of alignment pins (33) extending from the top surface. The three locking pin mounting holes are configured and oriented to receive the blade iron locking pins. Each locking plate has a top surface (36), three locking pin mounting holes (37), a pair of alignment pin slots (38) and a thumb tab (39). The three locking pin mounting holes are configured and oriented to receive and releasably lock with the blade iron locking pins.

Abstract: An inside-out ceiling fan motor has a stator mounted to a downrod with an annular array of stator coils positioned about a rotor axis of rotation. A rotor is rotatably mounted about the stator. The rotor has a plurality of vanes spaced along the rotor periphery and canted at an angle of attack to a plane of rotor vanes rotation oriented normally to the rotor axis of rotation to scoop ambient air into the rotor during fan operation through the stator coils to cool them.

Abstract: A ceiling fan (10) is disclosed having a motor housing (11) with an electric motor (13) to which is mounted an annular array of blade irons (14) each having a blade (15) and a locking plate (17) mounted thereto. Each blade iron has three locking pins (26). Each locking pin has a shaft (27) extending to a head (28). Each blade 15 has three key-hole shaped locking pin mounting holes (31) extending therethrough, a top surface (32) and a pair of alignment pins (33) extending from the top surface. The three locking pin mounting holes are configured and oriented to receive the blade iron locking pins. Each locking plate has a top surface (36), three locking pin mounting holes (37), a pair of alignment pin slots (38) and a thumb tab (39). The three locking pin mounting holes are configured and oriented to receive and releasably lock with the blade iron locking pins.

Abstract: A ceiling fan (10) is disclosed having a motor housing (11) with an electric motor to which is mounted an annular array of blade irons (14) each having a blade (15) mounted thereto. Each blade has two, catch mounting holes (17) and a fastener mounting hole (18) extending therethrough. Each blade iron (14) has a blade mounting portion (23) and a removable blade fastener (24). The blade mounting portion (23) has a top surface (26), two stationary mounting catches (27), and a fastener receiver (28) that is configured to receive fastener (24). Each catch has a generally vertical portion (31) and a top, horizontal portion (32) The horizontal portion (32) is spaced a select distance from the top surface (26) through the height of the vertical portion (31) so as to catch snugly the blade (15) therebetween. The fastener (24) extends through the fastener mounting hole 18 and into the fastener receiver (28).

Abstract: A fan (10) is disclosed having a downrod (11), a motor (12), a motor housing (13) substantially encasing the motor (12), and blades (14) mounted to the motor housing (13). Each blade (14) has an air intake scoop (16 adjacent to and extending from the motor housing (13). The interior space (17) created by the intake scoop (16) is in fluid communication with an opening (18) extending through the motor housing (13). Rotational movement of the air intake scoops (16) create airstreams which are directed to the electric motor for ventilation purposes.

Abstract: Ceiling fan energy consumption efficiency is enhanced with fan blades that have an angle attack that decreases from root end to tip end at higher rates of decrease nearer their tip ends than at their root ends.

Abstract: A centrifugal fan has a blower wheel (12) with an annular array of vanes (15) mounted for rotation about an axis of rotation. Each vane has a concave leading surface with an inboard portion located more proximally to the axis of rotation having a smaller radius of curvature than an outboard portion located more distally from the axis of rotation.

Abstract: Ceiling fan energy consumption efficiency is enhanced with fan blades that have an angle attack that decreases from root end to tip end at higher rates of decrease nearer their tip ends than at their root ends. Air flow distribution is enhanced with at least a portion of the blades having a dihedral that continuously increases.

Abstract: Ceiling fan energy consumption efficiency is enhanced with fan blades that have an angle attack that decreases from root end to tip end at higher rates of decrease nearer their tip ends than at their root ends. Air flow distribution is enhanced with at least a portion of the blades having a dihedral that continuously increases. Efficiency on downdraft is also achieved with the blades having concave top and bottom surfaces.

Abstract: Ceiling fan energy consumption efficiency is enhanced with fan blades that have an angle attack that decreases from root end to tip end at higher rates of decrease nearer their tip ends than at their root ends.

Abstract: Ceiling fan energy consumption efficiency is enhanced with fan blades that have an angle attack that decreases from root end to tip end at higher rates of decrease nearer their tip ends than at their root ends. Air flow distribution is enhanced with at least a portion of the blades having a dihedral that continuously increases. Efficiency on downdraft is also achieved with the blades having concave top and bottom surfaces.

Abstract: Ceiling fan energy consumption efficiency is enhanced with fan blades that have an angle attack that decreases from root end to tip end at higher rates of decrease nearer their tip ends than at their root ends. Air flow distribution is enhanced with at least a portion of the blades having a dihedral that continuously increases.